Messages

1

Network / Packet::Append

« on: July 21, 2011, 06:42:24 pm »

yeah dude but all data is IN the packet. to get the rest i need the starting pointer of rest. To do that i need to know what is the size of [sf::Uint8 type ][sf::Uint32 id ][std::string lobbyname ]

2

Network / Packet::Append

« on: July 21, 2011, 06:34:56 pm »

I get packet from client [sf::Uint8 type ][sf::Uint32 id ][std::string lobbyname ][rest]

i want to send from server packet without id and lobbyname, only packet type and the rest.

3

Network / Packet::Append

« on: July 21, 2011, 06:22:46 pm »

I got a packet like this:
[sf::Uint8][sf::Uint32][std::string][rest..]
now i want to make a new packet which has only sf::Uint8 and rest. How do i do that using append?(the problem is std::string..)

4

Graphics / Strange redrawing. Thats important

« on: July 18, 2011, 02:53:21 pm »

Before you make your life more complicated than necessary, you should test if the normal draw approach is really too slow. Test in Release mode with enabled optimizations.

i think 1000+ glbegin() per frame is extremally slow.

I used glOrtho, and then drawing with glBegin(GL_LINES)

5

Graphics / Strange redrawing. Thats important

« on: July 17, 2011, 11:09:06 pm »

Nooooooooooooooooooooooooo......
I need to draw many,many lines. The solution is OpenGL or sfml 2.0 with drawing to an image, right?

6

Graphics / Strange redrawing. Thats important

« on: July 17, 2011, 10:24:32 pm »

I wrote that code.

Code: [Select]


sf::RenderWindow w(sf::VideoMode(800,600,32),"a");
w.Clear(sf::Color(255,0,0));
w.SetFramerateLimit(100);
while(true){
w.Display();
cout<<"after disp: "<<endl;
sf::Sleep(1.0f);
}

On my PC everything works fine.
On my Notebook window once displays the red screen(good) and once the OLD BUFFER(which is totally mess). I really need help with that. I can't redraw everything each frame(the program is kinda bigger but its the minimal code).

7

Network / Effective SFML networking..

« on: July 15, 2011, 01:08:39 pm »

So...big applications work like this? 3 threads and a selector?Iis that a well projected loop ? Btw in my code i meant i waste 1/3 CPU time for loop that only checks whether there is a message to sent .

8

Network / Effective SFML networking..

« on: July 14, 2011, 10:00:45 pm »

Anyway thats only a few lines to watch

... or to edit. Since it was only a few lines, I did it. Avoid tabs, use spaces instead. Tabs are the best way to make our code unreadable across editors/viewers. Spaces are consistent.

Which one si slow, the client or the server?

TBH i think client.

9

Network / Effective SFML networking..

« on: July 14, 2011, 08:53:32 pm »

Anyway thats only a few lines to watch.

10

Network / Effective SFML networking..

« on: July 13, 2011, 10:42:41 pm »

Well I thought its kinda well indented I changed some ;p
Oh the result differs between a textbox i wrote that.. sort of hard to make it clear ;d Hope you can read it since its the minimal code.

11

Network / Effective SFML networking..

« on: July 13, 2011, 12:49:19 pm »

I've got a Client application which sends packet to the server, and server replies to client everything he sents. The problem is everything works perfectly after 1-2 first packets and then it goes really sloooooow. Need your help

Server code:

Code: [Select]


void runServer(unsigned short Port)
{
    if (!Listener.Listen(Port))
        return;
    sf::IPAddress Address;
    Listener.Accept(Client, &Address);
    while(true)
    {
        sf::Packet Packet;
        if (Client.Receive(Packet) == sf::Socket::Done)
            Client.Send(Packet);
    }
}


Client works on 3 threads.
1 is the main loop -getting events, drawing,pushing packets on queue(which will be sent). This code runs when i push a button

Code: [Select]


void Internet::queuePacket(sf::Packet* p)
{
    {
        sf::Lock Lock(sendMutex);
        toSend.push(p);
    }
}
2 is a loop which observes if there are any packets in queue to send, and it sends it .

Code: [Select]

void sendingLoop(void* UserData)
{
    queue<sf::Packet*>& toSend= *static_cast< queue<sf::Packet*>* >(UserData);
    while(runningThread)
    {
        if(!toSend.empty())
        {
            sf::Packet* p=NULL;
            {
                sf::Lock Lock(sendMutex);
                p=toSend.front();
                toSend.pop();
            }

            sf::Socket::Status st;
            st=Application::instance->internet.Send(*p);
            while(st==sf::Socket::NotReady)
            {
                sf::Sleep(0.01f);
                st=Application::instance->internet.Send(*p);
            }
            delete p;
        }
        else
            sf::Sleep(0.01f);
    }
}

3 is a loop receiving packets.

Code: [Select]


void receivingLoop(void* UserData)
{
    sf::SelectorTCP Selector;
    Selector.Add(Application::instance->internet);
    while(runningThread)
    {
        if(Selector.Wait(0.5f)>0)
        {
            sf::SocketTCP socket = Selector.GetSocketReady(0);
            sf::Packet pac;
            if(socket.Receive(pac)!=sf::Socket::Done)
                out<<"Err receiving"<<endl;
            sf::Uint8 type;
            pac>>type;
            switch(type)
            {
            case OBJECT:
                out<<"type=OBJECT"<<endl;
                break;
            default:
                out<<"Unknown packet type"<<endl;
                break;
            }
        }
    }
}
Blocking in client app is set to false, and in server to true.
Hlp!:D

12

Network / sf::Socket::Done

« on: July 10, 2011, 11:23:46 pm »

Okay ... the problem was on OnProcess samples - function returned false stopping streaming

the solution:

Code: [Select]


bool  NetworkRecorder::OnProcessSamples(const sf::Int16* Samples, std::size_t SamplesCount){
        sf::Packet PacketOut;
        PacketOut << AUDIODATA;
        PacketOut.Append(Samples, SamplesCount * sizeof(sf::Int16));
sf::Socket::Status st=Application::instance->internet.Send(PacketOut);

while(st==sf::Socket::NotReady){
st=Application::instance->internet.Send(PacketOut);
Sleep(0.001f);
}
return st==sf::Socket::Done;
    }
not sure if i lose some voice i say coz of blocking the function, im not sure if another thread executes this function on another stack

13

Network / sf::Socket::Done

« on: July 10, 2011, 03:04:58 pm »

i have client-server application
Client-streaming voice and sending movement messages
Server-gets messages from every client and replies to everyone
Blocking is set to false.
My app works perfectly but suddenly when i send a packet with my movement.

Code: [Select]

if (Send(pac) != sf::Socket::Done){
cout<<err<<endl;
}

It printfs "err" and my voice is no longer streamed.

my mainloop looks like this:

Code: [Select]


while(1){
/*...*/
getpac();
sendpac();
/*...*/
}


14

Network / VOIP example

« on: July 06, 2011, 04:47:27 pm »

i used some code from VOIP example and i set blocking sockets to none so my application is real-time etc. Here is the code from example which makes my program working sloooooooow.

Code: [Select]

while ((myOffset == mySamples.size()) && !myHasFinished)
            sf::Sleep(0.01f);
When i remove this receiving the sound doesnt work. How do i change this?[/code]

15

Network / Switching packets

« on: July 05, 2011, 12:12:22 am »

I want after getting a packet check what is the type of the packet(a line, a guy entering lobby)

Code: [Select]

class MyPacket: public sf::Packet{

private :
    virtual const char* OnSend(std::size_t& DataSize)
    {
Append(type.c_str(),type.length());
DataSize = GetDataSize();
return this->GetData();
    }

    virtual void OnReceive(const char* Data, std::size_t DataSize)
    {
        //HERE
    }
public:
string type;
};

How do i retrieve the type from const char* Data?